part of part of Homo sapiens zone of bone organ thoracic vertebra 8 superior articular facet of eighth thoracic vertebra 2026-03-19T00:00:00Z A zone of bone organ located on the superior articular process of the eighth thoracic vertebra, facing posteriorly and oriented in the coronal plane. It articulates with the inferior articular facet of T7 at the zygapophyseal joint, contributing to the paired synovial joints that guide movement in the lower mid-thoracic spine. David Osumi-Sutherland